Claimed that much of human behavior, especially the way cities grow, follows the basic principles of ecology that had been documented and applied to wildlife for many years at that point.

Robert E. Park

Explanation:

The Robert E. park was one of the american urban sociologist and he claimed about the human behavior towards the growing culture in the cities. It basically follow the basic ecology principle that are applied in the wildlife.

 Early, he was known as one of the influential figure in the united state. The Robert Ezra park was taught in the Chicago university in 1914. He play an important role in the sociology development.    

what are the events?

i think its toxic gasses but i could be wrong